AMI-LA radio continuum observations of Spitzer c2d small clouds and cores: Perseus region

TL;DR

This study uses deep radio observations at 1.8 cm to analyze the radio emission from embedded young stellar objects in the Perseus cloud, revealing detection rates and correlations with other properties.

Contribution

It provides new radio continuum data for embedded protostars in Perseus, improving understanding of their radio emission and its relation to other stellar properties.

Findings

72% of Class 0 objects detected in radio

31% of Class I objects detected in radio

No starless cores detected in radio

Abstract

We present deep radio continuum observations of the cores identified as deeply embedded young stellar objects in the Perseus molecular cloud by the Spitzer c2d programme at a wavelength of 1.8 cm with the Arcminute Microkelvin Imager Large Array (AMI-LA). We detect 72% of Class 0 objects from this sample and 31% of Class I objects. No starless cores are detected. We use the flux densities measured from these data to improve constraints on the correlations between radio luminosity and bolometric luminosity, infrared luminosity and, where measured, outflow force. We discuss the differing behaviour of these objects as a function of protostellar class and investigate the differences in radio emission as a function of core mass. Two of four possible very low luminosity objects (VeLLOs) are detected at 1.8 cm.